Microstructure and strength change of hardened cement paste under drying process

Ippei Maruyama, Yukiko Nishioka, Go Igarashi

Research output: Contribution to journalConference article

Abstract

Water vapor sorption isotherms, nitrogen sorption isotherms, and bending strength of cement paste cured with different relative humidity for 1 year are measured. Effect of drying on microstructure has two ways. One is nano-scale effect, in which nano-scale pore among globules is collapsed due to capillary tension or solution and re-precipitation cycle of C-S-H. The other one is atomic-scale effect, in which water adsorption sites are reduced due to drying by changing of other than Si network. From such effect, cement paste shows different nature of microstructure according to thermodynamic conditions, and resultantly, the physical properties are altered.

Original languageEnglish
Article numbere358
JournalSustainable Construction Materials and Technologies
Volume2013-August
Publication statusPublished - 2013 Jan 1
Event3rd International Conference on Sustainable Construction Materials and Technologies, SCMT 2013 - Kyoto, Japan
Duration: 2013 Aug 182013 Aug 21

Keywords

  • Bending strength
  • During process
  • Shrinkage
  • White cement paste

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Materials Science(all)

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